Many diesel engine lubricating oil impurity sources, crankshaft, cylinder head, the body cavity of the sand castings, processed residual iron, dust adhesion during assembly and so on. These impurities entering the bearing through the lubricant channel, the bearing rolling elements and raceways while producing wear. Therefore, some manufacturers in the crude oil filter and then increase the oil fine filter, in order to improve the cleanliness of the lubricant.

Select the appropriate bearing radial clearance bearing clearance have a great impact on the life of the bearing, temperature and noise, and therefore need to choose the most appropriate clearance according to the conditions, to ensure that the role of rational distribution of the load on the bearings between the rolling elements, minimizing sand screening machine working vibration and noise, improve the reliability of the bearing. Test analysis shows that to maintain a maximum service life of the bearing clearance optimal value is valid clearance is taken as a slight positive.

The reliability of the diesel engine main bearing Rolling practices were summarized and theoretical analysis. From the above analysis, since the structural flaws in the form of design itself, solve the problem of rolling bearings early wear fundamentally more difficult, but by improving the cleanliness of the bearing, select the appropriate bearing radial clearance, improved bearing assembly process, etc. It is to improve the reliability of rolling bearings effective measures.